import { readFileSync } from "node:fs";
import { join } from "node:path";
import { describe, expect, it } from "@suaveplan/testing/runner";
import { VIDEO_THUMBNAILS_CODES } from "./error-codes.js";

describe("VIDEO_THUMBNAILS_CODES", () => {
    it("exposes all nine codes under the VIDEO_THUMBNAILS namespace", {
        timeout: 5000,
    }, () => {
        const values = Object.values(VIDEO_THUMBNAILS_CODES);
        expect(values).toHaveLength(9);
        for (const value of values) {
            expect(value.startsWith("VIDEO_THUMBNAILS.")).toBe(true);
        }
    });

    it("every code is thrown by a real call site", { timeout: 5000 }, () => {
        const srcRoot = join(__dirname, "..");
        const files = [
            "runner/runner.ts",
            "runner/fluent-ffmpeg-runner.ts",
            "thumbnail-generator/thumbnail-generator.ts",
            "sprite-sheet/sprite-sheet.ts",
        ];
        const corpus = files
            .map((relative) => readFileSync(join(srcRoot, relative), "utf8"))
            .join("\n");
        for (const [reason, code] of Object.entries(VIDEO_THUMBNAILS_CODES)) {
            const accessor = `VIDEO_THUMBNAILS_CODES.${reason}`;
            const hasUsage = corpus.includes(accessor);
            expect(
                hasUsage,
                `expected ${code} (${accessor}) referenced in a src/ call site`
            ).toBe(true);
        }
    });
});